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CHEM - 3.2.2 Reaction Rates > Reaction Rates > Flashcards

Flashcards in Reaction Rates Deck (4)
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1
Q

Rate of reaction

A
  • Defined as the change in concentration of a reactant or a product in a given time.
  • rate (moldm^-3/s^-1)= change in conc./ time
2
Q

Changes in rate of reaction over time

A
  • Fastest at start as reactant is at its highest concentration.
  • Slows down as the reaction proceeds as the reactants are being used up and their conc. decreases.
  • Once one of the reactants has been completely used up, the conc. stops changing and rate of reaction is 0.
3
Q

Altering rate of reaction

A
  • Concentration or pressure when reactants are gases
  • Temp
  • Catalyst
  • Surface area of solids
4
Q

Collison theory

A

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